the onslaught of refuse that occurs after a particularly hearty meal, such as that of Thanksgiving.
There is the usual complication of everyone having the same symptom, but only a choice number of bathrooms. This fiasco can be referred to as the Turkey-Pants drop

After that bird, we had the biggest turkey drop ever witnessed on the eastern seabord.

This happens when a dating couple try the long-distance relationship thing when they go off to university or college in September. Typically, when Thanksgiving rolls around and everyone goes home for the holiday, someone gets dumped. Hence the turkey drop.

When a college freshman breaks up with their long time steady on the first holiday vacation back home, usually at Thanksgiving.

The dean of the university explained in parent orientation about the upcoming events in the school year.
"...and sure as the sun shines will come the the big turkey drop, it is at this time kids in record numbers break off their long term relationships on their first visit home..."

in addition to the college freshman trend, turkey dropping also occurs in the adult life where if you're not in a great situation at thanksgiving then you better get out then. If not, then you run into the problem of being a cad for dumping someone around christmas, new years, and valentines day. And heaven forbid they have a birthday november-february too.

I just had to do the turkey drop or else I was gonna be unhappy for the next 4 months for sure.

A tragically botched up promotion or operation. This definition comes from an episode of "WKRP in Cincinatti" when the station dropped live turkeys from an airplane for a supermarket Thanksgiving Day promotion. Unfortunately, the crew didn't know that turkeys can't really fly and the birds dropped like lead weights onto the parking lot crowd.

Despite all his efforts, Bob's well-planned evening with the hot chick was a total turkey drop.